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沖天爐煙氣的布袋除塵及脫硫處理

來源:未知 佚名 2019-09-24 瀏覽
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  沖天爐以廢鐵廢鋼為原料,熔化鐵水加工鑄造鑄件金巴黎彩票的設備。在熔化鐵水工序中,沖天爐使用焦炭作為燃料,焦炭的含量為:固定碳82~87%,含S 0.41%,灰份8~12%。沖天爐運行過程中產生了煙氣,其主要成分是SO2,需經過治理達標后方能排放。

金巴黎彩票   CHONGTIANLUFEIQIYUGUOLUYANQILEISI,WURANWUJUNWEIYANCHENHEERYANGHUALIU,CHULIGONGYIANGUOLUYANQIDECHULIGONGYIJINXINGXUANZE。YOUYUYANCHENNONGDUJIAOGAO,XIANJINGGUOCHONGTIANLUCHUCHENQIXITONGJINXINGYIJICHUCHENHOUZAIJINXINGTUOLIUCHULI(RUTUSHI)。

金巴黎彩票   CHONGTIANLUCHUCHENQIGONGZUOYUANLI:CHONGTIANLUCHULAIDEGAOWENHANCHENQITISHOUXIANJINRURAOLIUSHILENGQUEQI,SHIGAOWENHANCHENQITIDEDAODIYICILENGQUE,WENDUKEXIAJIANGDAO150~160 ℃,TONGSHIYIBUFENCUKELIZAIQITIKUOZHANG、LIUSUJIANMANHEXUANFENGDEZUOYONGXIACHENJIANGXIALAI;RANHOUHANCHENQITIJINRUDUOGUANSHUILENGQUEQI,YANQIDEDAOJINYIBULENGQUE,WENDUXIAJIANGDAO100 ℃YIXIA,HANCHENQITIZAIJINRUDAISHICHUCHENQICHEDICHUCHEN;JINGJINGHUAHOUDEQITIJINGFENGJICHOUZHIPAIQITONGPAICHU。DAISHICHUCHENQIYIXUANYONGQIXIANGMOCHONGDAISHICHUCHENQI,TAJIFENSHIFANCHUIHEMOCHONGPENCHUIDENGCHUCHENSHEBEIDETEDIAN,ZENGQIANGLESHIYONGSHIYINGXING,KEGUANGFANYINGYONGYUYEJIN、ZHUZAO、SHUINIHEZHIYAO、HUAGONGDENGXINGYEDEHUANBAOCHUCHEN。QIYANCHENPAIFANGNONGDU≤50 mg/Nm3,CHUCHENXIAOLVKEDA99%YISHANG。

 

  JINGYIJICHUCHENDEFEIQITUOLIUGONGYICAIYONGSHUANGJIANFAYANQITUOLIUGONGYI,QITUOLIUFANYINGSUDUKUAI,TUOLIUXIAOLVGAO。SHUANGJIANFAYANQITUOLIUGONGYISHISHIHUISHI(SHIHUI)/SHIGAOXIDIFADEBIANXING,KEFULEKEFUSHIHUISHI/SHIHUIFARONGYIJIEGOUDEQUEDIAN,TIGAOLESO2QUCHULV。SUOYIBENFANGANXUANYONG“SHUANGJIANFA”GONGYI。SHUANGJIANFASHISHIFAZHONGBIJIAOZHONGYAODEGONGYI,JUYOUTUOLIUCHUCHENXIAOLVGAO,TOUZISHAO,ZHANDIXIAO,YUNXINGFEIYONGDIDENGTEDIAN,FEICHANGSHIHEZHONGGUOGUOQING。TUOLIUSHILIYONGERYANGHUALIUDETEXING,JISUANXING、RONGJIEXING、YANGHUAXING、HUANYUANXING。ERERYANGHUALIURONGYUSHUIHOUYUJIANFANYINGDESUDUHENKUAIBUXUDUOJIAKAOLV。YIBANQINGKUANGXIA,DANGCHONGTIANLUCHANSHENGDEYANQIPAIRUTUOLIUQI,PENRUYIDINGLIANGJIANYESHI,JIANYEDEWUHUAZHILIANGYUEHAO、TUOLIUXIAOLVYUEGAO。BENTUOLIUCHUCHENQIDUTEDESHEJINENGSHIGAOSUYUNDONGDEQILIUDUIJIANYEZUOJILIEDEJIAOBAN,CHANSHENGWOLIUNEIXUNHUAN,ZHONGFUWUHUA,SHIJIANYEWANQUANWUHUA,YEDILIJINGJIBENZAI0.2mmYIXIA,DADAOZUIJIAWUHUAZHILIANG,YEWUYUSO2CHONGFENJIAOBANZAIYIQI,DADAOZUIJIADEJIECHUFANGSHIYUJIECHUMIANJI,CONGERDADAOLIXIANGDETUOLIUXIAOGUO。

  YONGJIANXINGYEXIDIHANSO2DEQITISHI,SHOUXIANSO2YUSHUIXIANGHUFANYINGSHENGCHENGYALIUSUAN,BUFENYALIUSUANSHUIJIESHENGCHENGH-、HSO3-JISHAOLIANGDESO32-LIZI。TONGSHISHUIZHONGDEJIANZELIJIECHENGNa+HEOH-LIZI。SHENGCHENGOH-LIZISHIYINXIALIEFANYINGERSHIH+LIZIJIANSHAO:

  

SO2 H2SO3 H++ HSO3-

 

  

OH- + H+ H2O

 

金巴黎彩票   H+JIANSHAODEJIEGUOSHISHIHSO3-HESO32-LIZILIANGZENGJIA,CONGERSHIRONGYEZHONGWEILIJIEDEYALIUSUANHEWULIRONGJIEDESO2HANLIANGJIANSHAO,YINCIJIXUCONGQITIZHONGXISHOUSO2。

金巴黎彩票   QICHUJIANGUOSHENGSHI,SO2YUJIANFANYINGSHENGCHENGZHENGYANYALIUSUANNA(Na2SO3)。

金巴黎彩票   2NaOH + SO2 → Na2SO3 + H2O

  DAIZHIJIANHAOJINERJIXUCONGYANQIZHONGXISHOUSO2SHI,ZESHENGCHENGSUANSHIYANYALIUSUANQINGNA(NaHSO3)。

  Na2SO3 + SO2 +H2O → 2NaHSO3

  YALIUSUANQINGNAYUJIANFANYINGYOUZAISHENGCHUZHENGYANYALIUSUANNA。

金巴黎彩票   NaHSO3 + NaOH → Na2SO3 + H2O

  ZAIYUNXINGGUOCHENGZHONG,BUKEBIMIANDIHUIFASHENGFUFANYING,JISHAOLIANGYALIUSUANNABEIYANGHUAWEILIUSUANNA(Na2SO4)。

  2Na2SO3 + O2 → 2Na2SO4

金巴黎彩票   PENLINHOULIURUCHENDIANCHISHIJIARUCa(OH)2,ZAISHENGCHENGNaOHHESHIGAODENGCHENDIANWU

金巴黎彩票   Na2SO3 + Ca(OH)2 → CaSO3↓ + 2NaOH

金巴黎彩票   Na2SO4 + Ca(OH)2 → CaSO4↓ + 2NaOH

金巴黎彩票   YALIUSUANNADEYANGHUALVYUYANQIZHONGDEYANGHANLIANG、YANCHENZAZHIZHONGLEIJIXUNHUANYENONGDU、PHZHIGAODIDENGYOUGUAN。

金巴黎彩票   XITONGZAIZHENGCHANGYUNXINGSHI,TUOLIUCAOZUOSHIZAIXISHOU—ZAISHENGZHONGXUNHUANJINXING,YOUCIKEJIAN,XUNHUANYESHIYOUNa2SO4--- Na2SO3--- NaHSO3ZUCHENGDERONGYETIXI,RONGYEZHONGDENa2SO3YUNaHSO3DENONGDUHEBILISHIYINGXIANGXISHOULVDEGUANJIANYINSU。QIZHONGYOUTUOLIUNENGLIDECHENGFENSHINa2SO3。ZAIBUDUANXISHOUSO2SHENGCHENGNaHSO3GUOCHENGZHONG,BIAOXIANWEIXUNHUANYEPHZHIZHUJIANXIAJIANG,XUNHUANYEMIANSHANGDEERYANGHUALIUFENYAPSO2ZHUJIANSHENGGAO,TUOLIUNENGLIZHUJIANJIANGDI。WEILEHUIFUXUNHUANYEDEXISHOUNENGLI,BIXUZAISHENGNa2SO3。WEICI,ANXUYAODEJIANLIANGTOURUPHDIAOJIECAO,DIAOJIEXUNHUANYEDEPHZHI,JIKEZAISHENGCHUNa2SO3。

金巴黎彩票   DANGXUNHUANYEZHONGDENa2SO3QUANBUBIANWEINaHSO3,JIXUXISHOUSO2SHI,BUKENENGZAIQIHUAXUEFANYING,CISHIJINYINSO2DUIGAIRONGYEDERONGJIEDUGUANXIERRONGJIEYURONGYEZHONGBINGDADAOBAOHE,XUNHUANYEPHZHIJIJUXIAJIANG,XUNHUANYEMIANSHANGDEERYANGHUALIUFENYAPSO2JIJUSHENGGAO,XISHOUGUOCHENGWUFAJINXING。YINCI,XUNHUANYEDEPHZHIBIXUKONGZHI。Na2SO3、NaHSO3HENa2SO4ZAISHUIZHONGDERONGJIEDUSUIWENDUBIANHUAERBIANHUA,CHUNaHSO3SUIWENDUSHENGGAOERZENGJIAWAI,QIYULIANGZHONGDOUSHIZAI40℃SHIRONGJIEDUZUIDA,RANHOUSUIZHUWENDUDESHENGGAOERJIANSHAO。TONGCHANG,XUNHUANYEDEWENDUKESHENGZHI60~65℃。DANGXUNHUANYENONGDUJIAOGAOSHI,NaHSO3ZAIXUNHUANYEDEWENDUXIACHUYUBUBAOHEZHUANGTAI,ERDANGTOURUCa(OH)2ZAISHENGNaOHSHI,YOUYUCaSO3RONGJIEDUJIAOSHAO,DADAOBAOHEBINGJIEJINGXICHU,CONGERSHISHUIPINGZHONGDESO32-NONGDUXIAJIANG,DADAOXUNHUANSHUIZAIXISHOUSO2DEXIAOGUO。DANSHIYINWEIFENYAWENTI,HUANSHIXUYAODINGSHIHUANSHUI,BAOCHIXUNHUANSHUIPENLINTUOLIUCHUCHENDEXIAOGUO。

金巴黎彩票   XISHOULESO2、SO3HENO2DEJIANYEZAITAWAIHUNHECHIZHONGYONGDIERJIANSHIHUIHUOSHIHUISHIZAISHENGNaOH,SHENGCHENGDECaSO3HEBUFENCaSO4ZAICHINEICHENDIAN,SHANGQINGYEFANHUIXISHOUXITONGXUNHUANSHIYONG。

  ZUIHOU,CHONGTIANLUDEFEIQIJINGCHULIHOUKEDUIWAIPAIFANG,DADAO《GONGYELUYAODAQIWURANWUPAIFANGBIAOZHUN》(GB9078-1996)BIAOZHUN,YANCHENPAIFANGNONGDU≤30mg/m3,LINGEMANHEIDU1JI,ERYANGHUALIUPAIFANGNONGDU≤900mg/m3,DANYANGHUAWUPAIFANGNONGDU≤400mg/m3。

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